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'A' or 'B' generator circuit?
This is so embarrassing, I must just be getting old; I can't remember
if the generator in my '61 C-172 is an A or B circuit. Worse, I forget which one is which. Does the 'A' supply controlled voltage to the field and the 'B' does a controlled "ground out" of voltage coming from the field or do I have it backwards? My system seems to be charging, just not enough. It might be OK and I'm just taking too many short hops with too many bells and whistles on. Can someone refresh my memory so my checks are correct? Jim |
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'A' or 'B' generator circuit?
jim wrote:
This is so embarrassing, I must just be getting old; I can't remember if the generator in my '61 C-172 is an A or B circuit. Worse, I forget which one is which. Does the 'A' supply controlled voltage to the field and the 'B' does a controlled "ground out" of voltage coming from the field or do I have it backwards? My system seems to be charging, just not enough. It might be OK and I'm just taking too many short hops with too many bells and whistles on. Can someone refresh my memory so my checks are correct? Jim The regulator is between the alternator and ground in the A type system ("controls the ground"), and is between the power buss and the alternator in a B type system ("controls the power"). Piper Cherokees use a type B system. I don't know about Cessnas. |
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